Automatic switch-throwing apparatus.



J. H. PARKHURST.

AUTOMATIC SWITCH THROWING APPARATUS.

APPLIOATION FILED MAY 9, 1914.

1,1 16,108. Patented Nov.3, 1914.

WWIIFIHWF- atio'zwca JOSEPH H. PARKHURST, 0F TALOGA, OKLAHOMA.

AUTOMATIC SWITCI-I-THROWING APPARATUS.

Specification of Letters Patent.

Patented Nov. 3, 1914.

Application filed May 9, 1914. Serial No. 837,552.

To all whom it may concern.-

Be it known that I, Josnrn H. PAnKnURs'r, a citizen of the UnitedStates, residing at Taloga, in the county of Dewey and State ofOklahoma, have invented certain new and useful Improvements in AutomaticSwitchflhrowing Apparatus; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters and figures of reference marked thereon, which form a part ofthis specification.

This invention relates to new and useful improvements in devicesforautomatically throwing switches, comprising means carried by anengine and adapted to be lowered to trip against a projection upon acrank shaft, forming means whereby the shaft may be rocked and theswitch thrown before the engine reaches the latter.

The invention comprises various details of construction, combinationsand arrange ments of parts which will be hereinafter fully described,shown in the accompanying drawings and then specifically defined in theappended claims.

I illustrate my invention in the accompanying drawings, in which:

Figure 1 is a side elevation of the device. Fig. 2 is a top plan view.Fig. 3 is an enlarged detail view of means for tripping or throwing theswitch.

leference now being had to the details of the drawin s by letter, A, Adesignate the rails of a railway, and B is a rock shaft journaled in theaperture in the bearings E in the main rail or, if preferred,independent rails may be provided for hearing Incinhers. Sa'id shaft hasan arm C fixed there to which is adapted, as the shaft is rocked, to bethrown slightly above the upper surface of the rails and in the path ofthe means carried by the engine whereby the shaft may be rocked as theengine passes over the same. Said. shaft has a crank B to which a rod Fis fastened, the rod being provided with an eye F at one end forengagement with one arm of the angled lever O, pivotally mounted uponthe pivot J. The

other end of the angled lever is connected to a rod K which in turn isfastened pivotally to a switch. Said angle lever is mounted in a slot Lformed in the upper surface of the tie and has a pivotal swingingmovement therein, limited by the opposite edges of the slot.

Upon the engine is pivotally mounted a lever M, one end of which isadapted to be thrown down into contact with the projection upon saidrock shaft, and P is a plate which is pivoted to a projection M. of thelever M, and a coiled spring S bears against a projection upon the leverM and is attached to the under face of the plate 1, forming yieldingmeans whereby the plate, after being depressed, may be returned to itsnormal position.

In operation, when it is desired to throw the switch, the engineer bythrowing down the lever M may cause the end thereof to contact with theprojection upon the rock shaft, causing the latter to rock and theswitch to be thrown before the engine reaches the latter. It will beunderstood that said projection upon the rock shaft may be adjusted tooperate from a train coming in the opposite direction, if desired, bysimply reversing the projection.

Millet I claim to be new is:

An automatic apparatus for throwing switches comprising, in combinationwith the ties and rails of a railway, one of said ties having a recessin the upper surface thereof, a crank shaft and. suitable mountingtherefor, a projection upon the rock shaft, a rod pivoted to a crank ofsaid shaft, an angle lever positioned in said recess and having an eyeformed at the angled portion thereof, a stationary pin secured to the recessed tie and passing through said eye and upon which the lever ispivoted, an eye at the end of said rod engaging one arm of said lever,and connections between the other arm and switch throwing rod.

In testimony whereof I hereunto affix my signature in presence of twowitnesses.

JOSEPH II. PARKIIURST.

Witnesses JOHN E. Hooron, Manvm M. Wnrrrnnnnne.

copies of this patent mas be obtained for five cents each, by addressingthe Commissioner of Bat-exits,

Washington, D. 0.

